Patents by Inventor Wilson Chung-Yeh Tsu

Wilson Chung-Yeh Tsu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Alkaline and acid pressure oxidation of precious metal-containing materials
    Patent number: 9534273
    Abstract: The present invention is directed to a precious metal recovery process in which an acid sulfidic feed material is subjected to acid pressure oxidation and an alkaline sulfidic feed material is subjected to alkaline pressure oxidation, with the discharge slurries from the pressure oxidation processes being combined to reduce neutralization requirements prior to precious metal recovery.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: January 3, 2017
    Inventors: John William Langhans, Jr., Wilson Chung-Yeh Tsu
  • ALKALINE AND ACID PRESSURE OXIDATION OF PRECIOUS METAL-CONTAINING MATERIALS
    Publication number: 20140096649
    Abstract: The present invention is directed to a precious metal recovery process in which an acid sulfidic feed material is subjected to acid pressure oxidation and an alkaline sulfidic feed material is subjected to alkaline pressure oxidation, with the discharge slurries from the pressure oxidation processes being combined to reduce neutralization requirements prior to precious metal recovery.
    Type: Application
    Filed: December 11, 2013
    Publication date: April 10, 2014
    Applicant: Barrick Gold Corporation
    Inventors: John William Langhans, Wilson Chung-Yeh Tsu
  • Alkaline and acid pressure oxidation of precious metal-containing materials
    Patent number: 8623115
    Abstract: The present invention is directed to a precious metal recovery process in which an acid sulfidic feed material is subjected to acid pressure oxidation and an alkaline sulfidic feed material is subjected to alkaline pressure oxidation, with the discharge slurries from the pressure oxidation processes being combined to reduce neutralization requirements prior to precious metal recovery.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: January 7, 2014
    Assignee: Barrick Gold Corporation
    Inventors: John William Langhans, Jr., Wilson Chung-Yeh Tsu
  • ALKALINE AND ACID PRESSURE OXIDATION OF PRECIOUS METAL-CONTAINING MATERIALS
    Publication number: 20120128528
    Abstract: The present invention is directed to a precious metal recovery process in which an acid sulfidic feed material is subjected to acid pressure oxidation and an alkaline sulfidic feed material is subjected to alkaline pressure oxidation, with the discharge slurries from the pressure oxidation processes being combined to reduce neutralization requirements prior to precious metal recovery.
    Type: Application
    Filed: November 21, 2011
    Publication date: May 24, 2012
    Applicant: Barrick Gold Corporation
    Inventors: John William Langhans, JR., Wilson Chung-Yeh Tsu